<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
    <title>登录页面</title>
</head>
<body>
<h1>登录</h1>
<br>
<br>
<form action="/user/signIn" method="post">
    用户名<input type="text" name="username" placeholder="用户名">
    <br>
    密码<input type="password" name="password" placeholder="密码">
    <br>
    <br>
    <input type="submit" value="登录">
</form>
<a href="/sign_up.jsp">注册</a>
<h2 style="color: red;">${requestScope.error}</h2>
</body>
</html>